Most VST instruments will run on Windows computers. Some examples of free VST effects would be Choruses, Phasers, and Reverb. Some examples of instrument sounds would be a Piano, Violin, Trumpet, etc. VSTs are audio software plugins that you can use with music software to add additional instrument sounds or audio effects. VST stands for Virtual Studio Technology. VST instruments give you additional sounds to create with like Pianos, Synths, Organs, and Bass. These are the best VST plugins that can be used with music software like FL Studio, Ableton Live, Pro Tools, Reaper, and more.